zhihai xu created YARN-3549:
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Summary: use JNI-based FileStatus implementation from
io.nativeio.NativeIO.POSIX#getFstat instead of shell-based implementation from
RawLocalFileSystem in checkLocalDir.
Key: YARN-3549
URL: https://issues.apache.org/jira/browse/YARN-3549
Project: Hadoop YARN
Issue Type: Bug
Components: nodemanager
Reporter: zhihai xu
Assignee: zhihai xu
Use JNI-based FileStatus implementation from
io.nativeio.NativeIO.POSIX#getFstat instead of shell-based implementation from
RawLocalFileSystem in checkLocalDir.
As discussed in YARN-3491, shell-based implementation getPermission runs shell
command "ls -ld" to get permission, which take 4 or 5 ms.
We should switch to io.nativeio.NativeIO.POSIX#getFstat as implementation in
RawLocalFileSystem to get rid of shell-based implementation for FileStatus.
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